Grace finally is able to give herself fully to the powers of Tresum. Teaming up with Griffen and Bro, Grace temporarily fights off Michelle and the House of Shadows when they attack one of the Cove's residents.

With the help of a potion, Grace works her way into Adam's subconscious and soon finds that the House of Shadows has come to Dante's Cove. Diana, meanwhile, is finding it increasingly harder to resist the House's calls.

The discovery of a corpse on the beach sends Grace on a mission to discover the root of the new dark force on Dante's Cove. A perplexed Bro realizes that he is losing his powers, while Diana is lured by the House of Shadows.